that, along with some of the heaviest snow of the season, has made for dangerous driving in colorado. in iowa, it was ice that sent trucks and cars skidding off the roads. on the other side of the world, they've already celebrated the arrival of 2011. in hong kong, the new year kicked off with a synchronized fireworks display. in dubai, pyrotechnics lit up the world's tallest building. and in moscow, the crowd in snowy red square cheered fireworks over the domes of st. basil's. here in new york, the big moment is still a few hours away, but the crowd is gathering in times square and michelle miller is there. michelle, good evening. >> reporter: good evening, harry. it's been a wonderfully mild day here in new york city, high, 44 degrees, and officials say that means larger crowds. it's estimated that more than a million people will be here in times square when the ball drops. >> we're just getting married when the ball drops wherever we are. >> reporter: as revelers stake out their positions in times square, new york police and federal agents are focused on making sure they're safe.